Furnace-door frame



J. THORNTON.

FUHNACE DOOR FRAME. APPLICATION FILED DEC. 8. 1920.

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ATTORNEY I. IHORNTON.

FURNACE DOOR FRAME.'

APPLICATION FILED DEC. 8. 1920.

.Patented Feb. 28, 1922.

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rUnNAcE-Dooa rama Specification of Letters Patent. Patented Feb. I28, 1922 Application led December 8, 1920. Serial No. 429,154.

To all'wkom t may concern."-

Be it known that I, JOHN THORNTON, a citizen of the United States, residing' at Youngstown, in the county of Mahoning and State of Ohio, have invented certain new and useful Improvements in Furnace-Door Frames, of which the following is a specification.

This inventionk relates to pen-hearth Afurnace door-frames, and has for its object the protection of the furnace wall immediately adjoining the inner end of the charging port of the door-frame.

Figure 1 is a view in perspective, showing the front, top and one end of the furnace door-frame; Figure 2 is a vertical longitudinal section on line 2-2 Figure 3; Figure 3 is a vertical transverse section on line 3-3 'Figure 2; Figure 4 is a horizontal sectional View on line 4 4 Figure 2, looking in the direction of the arrow; Figure 5 '1s a front view showing a modified construction, including a passageway through the frame for the purpose of making slight repairs without removing the frame; Figure. 6 is a vertical longitudinal section on line 6-6 Figure 7 and Figure 7 is a Vertical transverse section on line 7-7 Figure 5.

'registerin wall, so t at the opening in the wall may In the 4Ordinar construction of' open hearth furnaces, t e door-frame is set up against the outer side of the furnace wall, the charging port lthrough the door-frame flush with the opening in the be said to be, in effect at least, a continua` tion of the charging port,no part of the frame being encased within the wall. This construction, ofcourse, leaves the brick of the wall around the opening absolutely eX- posed and unprotected, and subject to constant interference and disturbance by the charging apparatus, as it is forced through and beyond the inner end of the port proper, making necessary repairs and renewals of this wall of frequent occurence. Such re'- pairs are unusually costly and expensive, by

reason of the difficult accessibility to the place where they are to be made.

As indicated above, the object of my invention is'ito provide this immediate portion of the; furnace wall with protection against such interfere-nce and destruction by the charging apparatus.

As is well known to the trade, these doorfra'mes are of metal and of hollow forma- 'cooling purposes.

tion, through which water is circulated for In the drawings, projection's or flanges 1--1, Figure 1, represent the door guides of the frame between which the door s lides up and down, being held 1n perpend1cular osition by its own weight.

The inlets o'r\p1pes5 are such as are ordi narlly used to maintain the water circulation through the frame yfor cooling purposes.

6 represents the port ofthe door-frame through which the 'furnace is. charged. A round the inner end of this port I provide a hollow guard :flange or projection 7, preferably builtwintegrally with theframe, as an abutment against which the -brickwork or wall 8 of `,the furnace may be built, in order to keep* it back, and away, from the wall or opening of the port, so that the charging apparatus may be forced through the port, and into the furnace, without the possibility of comin into contact with the wall or brick-work'` o the furnace.

In, Figures- 5, 6 and 7 I have shown a modified form of construction of myk invention, ,in which the charging portisan lar in 'cross section rather than Oval, las s own in Figures 1,. 2 and 3.

As indicated above, in this form of con` struction the to of vthe charging port is fiat, and I `provide'an opening or passageway 9 through the frame-work from front to rear above the projection 7, the bottom of the passageway being substantially on thevsam'e horizontal plane as the top of the projection 7 This renders it practicalto make slight repairs to the furnace-wall 8 without removing the door-frame, by simply passing the brick through the opening 9 from the front of the frame, and placing them in position in the wall.

I claim:

1. A furnace door-frame standing outside of the wall of the furnace, and having a charging-port provided at its inner end with a projecting flange or proj ection. v

2. A furnace door-frame standing outside of the wall of the furnace, and having. a charging-port provided at its inner end with a protecting flange or projection,the inner wall of said flange being in alignment with the outer `Wall of said charging-port- 3. A furnace door-frame standing outside of the wall of the furnace and having a chargingrt provided at its inner end with an inwar ly extending projection constituting an abutment or support for the adjacent wall of the furnace. l

4f. A furnace door-frame standing outside of the wall of the furnace and having a chargingort-provided at its inner end with an inwar y extending projection constituting an abutment or support for the adjacent wall of the furnace,-the inner wall of said projection being in alignment with theouter wall of said chargingport.

5. A furnace door-frame of hollow con-l struction standing outside of the wall of the furnace and having a charging-port provided at its inner end with a hollow protecting flange or projection communicating with the frame structure.

.6` A furnace door-frame of hollow construction standing outside of the wall of the furnace and having a charging-port provided at its inner end with a hollow protecting ange or projection communicating' with the frame structure,-.the inner wall of said projection being in alignment with the outer wall of said charging-port.

7. A furnace door-frame of hollow construction standing outside of the wall of the furnace, and having a charging-port provided at its inner end with an inwardly extending hollow projection communicating with the' frame structure, and constituting an abutment or support for the adjacent wall of the structure.

8. A furnace door-frame of hollow construction standing outside of the wall of the furnace, and having a chargingfpo-rt provided at its inner end with an inwardly eX- tending hollow projection communicating with the frame structure,n and constituting an abutment or support for the adjacent wall ofthe furnace,the inner wall of said projection 'being in alignment with the outer wall of said charging-port.

9. A furnace door-frame standing outside of the wall of the furnace, and having a charging-port-provided at its inner end with a protecting flange or projection, and an side o f the wall of the furnace, and having a l charging-port provided at itsinner end vwlth an 1nwardly'extending projection constitut` ing an abutment or support for the adjacent wall of the furnace, and also with an opening or passageway above the port.

12. A furnace doo-r-frame of hollow construction standing outside of the wall of the furance, and having a charging-port provided at its inner end with an inwardly extending hollow projection communicating with the frame structure, and constituting an abutment or support for the adjacent wall of the furnace, and also with an opening .or passageway above the port.V

13. A furnace door-frame ofhollowconstruction standing outside of the wall of the furnace, and having a charging-port provided at its inner4 end with an inwardly extendingl hollow projection communicating with the frame structure, and constituting an abutment o'r support for "the adjacent l wall of the furnace,the inner wall of said projection being in alignment with the outer wall of said port, and also with an opening or passageway above the port. l

In testimony whereof I have hereunto af-l xed my signature in the presence of two witnesses.

J OHNlVATHORNTON. 

